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16 Cards in this Set
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How does one convert from fahrenheit (F) to Celsius (C)?

T(F)=(9/5)T(C)+32
fahrenheit = (9/5)Celsius plus 32. 

How does one convert from Celsius to Kelvins (K)?

T(K) = T(C)+273 (rounded)


What does the symbol Q stand for in thermal physics?

Amount of heat is represented by Q.


What does the symbol c stand for in thermal physics?

C is the specific heat of a material.


What is the euqation that connects the amount of heat with a temperature?
In other words, how much heat does a material have with a specific temperature? 
Q=mc▲T
Heat (in joules) is mass * specific heat * change in temperature. 

What equation gives us the heat required to change the phase of an object?

Q=mL
where L is the latent heat of transormation. 

What equation tells us how much an object expands?

▲L = α(Li)▲T
change in length = α (coefficient of linear expansion) * initial length * change in temperature. 

What equation gives us the change in volume?

▲V = β(Vi)▲T
change in volume = β (coefficient of colume expansion) * initial volume * change in temperature 

Equation to find pressure?

P = F/A
Pressure = Force/Area P is measures in pascals (N/m²) 

What is the Ideal Gas Law?

PV = nRT
Tip: remember by its name: PivNirt. 

Equation for velocity of gas molecules?

v = sqrrt[(3RT)/M]
velocity = square root of three * R * Temperature / Molecular Mass 

Work is done when volume changes. What is the equation to find work?

W = P▲V


If volume is constant, then the energy needed to change the temperature of a certain # of moles is...

Q = n(Cv)▲T
where Cv is the molar heat capacity at constant volume 

If pressure is constant, then the energy needed to change the temperature of a certain # of moles is...

Q = n(Cv)▲T
where Cv is the molar heat capacity at constant pressure 

Change in Potential Energy =

▲U = Q  W


How do you find the efficiency of an engine?

1) W=QhQc
2) e=W/Qh 